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This 900 MHz radio version can be used for either 868 MHz or 915 MHz transmission/reception – the exact radio frequency is determined when you load the software since it can be tuned around dynamically. At the Feather 32u4's heart is at ATmega32u4 clocked at 8 MHz and at 3.3 V logic. This chip has 32 K of flash and 2 K of RAM, with built in USB so not only does it have a USB-to-Serial program & debug capability built in with no need for an FTDI-like chip, it can also act like a mouse, keyboard, USB MIDI device, etc. To make it easy to use for portable projects, we added a connector for any 3.7 V Lithium polymer batteries and built in battery charging. You don't need a battery, it will run just fine straight from the micro USB connector. But, if you do have a battery, you can take it on the go, then plug in the USB to recharge. The Feather will automatically switch over to USB power when its available. We also tied the battery thru a divider to an analog pin, so you can measure and monitor the battery voltage to detect when you need a recharge. Features Measures 2.0' x 0.9' x 0.28' (51 x 23 x 8 mm) without headers soldered in Light as a (large?) feather – 5.5 grams ATmega32u4 @ 8 MHz with 3.3 V logic/power 3.3 V regulator with 500 mA peak current output USB native support, comes with USB bootloader and serial port debugging You also get tons of pins – 20 GPIO pins Hardware Serial, hardware I²C, hardware SPI support 7x PWM pins 10x analog inputs Built in 100 mA lipoly charger with charging status indicator LED Pin #13 red LED for general purpose blinking Power/enable pin 4 mounting holes Reset button The Feather 32u4 Radio uses the extra space left over to add an RFM69HCW 868/915 MHz radio module. These radios are not good for transmitting audio or video, but they do work quite well for small data packet transmission when you ned more range than 2.4 GHz (BT, BLE, WiFi, ZigBee) SX1231 based module with SPI interface Packet radio with ready-to-go Arduino libraries Uses the license-free ISM band ('European ISM' @ 868 MHz or 'American ISM' @ 915 MHz) +13 to +20 dBm up to 100 mW Power Output Capability (power output selectable in software) 50 mA (+13 dBm) to 150 mA (+20 dBm) current draw for transmissions Range of approx. 350 meters, depending on obstructions, frequency, antenna and power output Create multipoint networks with individual node addresses Encrypted packet engine with AES-128 Simple wire antenna or spot for uFL connector Comes fully assembled and tested, with a USB bootloader that lets you quickly use it with the Arduino IDE. Headrs are also included so you can solder it in and plug into a solderless breadboard. You will need to cut and solder on a small piece of wire (any solid or stranded core is fine) in order to create your antenna. Lipoly battery and USB cable not included.

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Ready-to-use devices and self-built Arduino nodes in the 'The Things Network' LoRaWAN has developed excellently as a communication solution in the IoT. The Things Network (TTN) has contributed to this. The Things Network was upgraded to The Things Stack Community Edition (TTS (CE)). The TTN V2 clusters were closed towards the end of 2021. This book shows you the necessary steps to operate LoRaWAN nodes using TTS (CE) and maybe extend the network of gateways with an own gateway. Meanwhile, there are even LoRaWAN gateways suitable for mobile use with which you can connect to the TTN server via your cell phone. The author presents several commercial LoRaWAN nodes and new, low-cost and battery-powered hardware for building autonomous LoRaWAN nodes. Registering LoRaWAN nodes and gateways in the TTS (CE), providing the collected data via MQTT and visualization via Node-RED, Cayenne, Thingspeak, and Datacake enable complex IoT projects and completely new applications at very low cost. This book will enable you to provide and visualize data collected with battery-powered sensors (LoRaWAN nodes) wirelessly on the Internet. You will learn the basics for smart city and IoT applications that enable, for example, the measurement of air quality, water levels, snow depths, the determination of free parking spaces (smart parking), and the intelligent control of street lighting (smart lighting), among others.

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This USB Logic Analyzer is an 8-channel logic analyzer with each input dual purposed for analog data recording. It is perfect for debugging and analyzing signals like I²C, UART, SPI, CAN and 1-Wire. It operates by sampling a digital input connected to a device under test (DUT) at a high sample rate. The connection to the PC is via USB. Specifications Channels 8 digital channels Maximum sampling rate 24 MHz Maximum input voltage 0~5 V Operating temperature 0~70°C Input impedance 1 MΩ || 10 pF Supported protocols I²C, SPI, UART, CAN, 1-Wire, etc. PC connection USB Dimensions 55 x 28 x 14 mm Included USB Logic Analyzer (8-ch, 24 MHz) USB Cable Jumper Wire Ribbon Cable Downloads Software

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Highlights Output Frequency (Sine): 50 MHz Output Frequency (Square): 15 MHz Channels: 2 Arbitrary Waveform Length: 16 Mpts Features Unique SiFi II (Signal Fidelity II) technology: generate the arbitrary waveforms point by point; recover the signal without distortion; sample rate accurate and adjustable; jitter of all the output waveforms (including Sine, Pulse, etc.) as low as 200 ps 16 Mpts memory depth per channel for arbitrary waveforms Standard dual-channel with the same performance, equivalent to two independent signal sources High frequency stability: ±1 ppm; low phase noise: -105 dBc/Hz Built-in high-order harmonic generator (at most 8-order harmonics) Built-in 7 digits/s, 240 MHz bandwidth full featured frequency counter Up to 160 built-in arbitrary waveforms, covering the common signals in engineering application, medical electronics, auto electronics, math processing, and other various fields Sample rate up to 250 MSa/s, vertical resolution 16 bits Arbitrary waveform sequence editing function available; arbitrary waveforms also can be generated through the PC software Various analog and digital modulation functions: AM, FM, PM, ASK, FSK, PSK, and PWM. Standard waveform combine function, capable of outputting specified waveforms combined with the basic waveforms Standard channel tracking function, when enabled, all the parameters of both channels are updated based on users' configurations Standard interface: USB Host&Device and LAN (LXI Core 2011 Device); USB-GPIB function supported 4.3'' TFT Included 1x Rigol DG2052 Function/Arbitrary Waveform Generator 1x Power cord 1x USB cable

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Specifications Bandwidth: 200 MHz Analog Channels: 2 Real-time sample rate up to 1 GS/s Memory depth up to 24 Mpts Up to 30,000 wfms/s waveform capture rate Up to 60,000 frames hardware real-time waveform recording and playback functions Innovative 'UltraVision' technology Various trigger and bus decoding functions Low noise floor, vertical scale range: 1 mV/div to 10 V/div Various interfaces: USB Host&Device, LAN (LXI), AUX Compact size, light weight, easy to use 7 inch WVGA (800x480) TFT LCD, intensity graded color display Included 1x Rigol DS1202Z-E Oscilloscope 1x Power cord 1x USB cable 2x PVP2350 passive oscilloscope probe (350 MHz)

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UNI-T UPO1202CS is a multifunctional, low-cost 2-channel digital phosphor oscilloscope with 200 MHz bandwidth and 1 GSa/s sampling rate. It can be widely used in the fields of electronic and electrical design, debugging, education and industrial design. UPO1000CS series adopts parallel digital signal processing technology, which greatly improves the data processing speed and waveform capture rate. The original Ultra Phosphor technology can present the cumulative effect of the tested signal as a multi-layered afterglow. Compared with traditional digital storage oscilloscopes, the persistence of digital phosphor oscilloscopes can present three-dimensional waveform data of amplitude, time and signal intensity. Fast Acquire technology can accurately capture abnormal events such as video, jitter, noise and runt signals. Specifications UPO1102CS UPO1202CS Bandwidth 100 MHz 200 MHz Analog channels 2 2 Sampling rate 1 GSa/s 1 GSa/s Storage depth 56 Mpts per channel 56 Mpts per channel Rise time ≤3.5ns ≤1.8ns Capture rate 500,000 wfms/s 500,000 wfms/s Waveform record 100,000 frames 100,000 frames Features 7' WVGA (800 x 480) TFT LCD Ultra Phosphor super fluorescent display effect, up to 256 levels of gray display Support RS232, I²C, SPI, CAN and LIN trigger Innovative RS232, I²C, SPI, CAN and LIN hardware decoding Vertical scale: 1 mV/div-20 V/div Low background noise: <100 μVrms 1M points enhanced FFT function. Support frequency setting, waterfall diagram, detection setting and marker measurement etc 36 kinds of waveform parameters can be automatically measured Rich trigger functions (edge, pulse width, video, slope, runt, overshoot, delay, timeout, duration, setup and hold, Nth edge and pattern trigger) Multi-Scopes support dual-channel independent trigger fluorescence display Multi-channel independent 7-bit hardware frequency counter DVM supports dual-channel independent AC and DC true RMS measurement Waveform arithmetic functions (FFT, +, -, ×, ÷, digital filtering, logic operations, and advanced operations) Rich interfaces: USB Host, USB Device, LAN, EXT Trig, AUX Out (Trig Out, Pass/Fail) Support SCPI programmable instrument standard command Support WEB access and control Downloads Datasheet Programming Manual User's Manual Quick Start Guide Software

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Specifications Bandwidth 100 MHz Sample Rate 100 MS/s Horizontal Scale (s/div) 5ns/div - 1000s/div, step by 1 - 2 - 5 Channel 4 Display 7" color LCD, 800 x 480 pixels Input Coupling DC, AC and GND Vertical Resolution (A/D) Vertical Resolution (A/D) Vertical Sensitivity 5mV/div - 5V/div (at input) Trigger Type Edge, Video Trigger Mode Auto, Normal and Single Waveform Math ＋, －, x, ÷, invert, FFT Fuse 2A, T class, 250 V Dimension (W x H x D) 301 x 152 x 70 mm Weight 1.1 kg Included 1 x SDS1104 1 x Mains power cord 1 x CD Rom 1 x Quickstart Guide 1 x USB Cable 4 x Oscilloscope probe 1 x Probe Adjust For more information, check out the user manual here.

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Specifications Bandwidth: 50 MHz Analog Channels: 4 Real-time sample rate up to 1 GS/s Memory depth up to 24 Mpts Up to 30,000 wfms/s waveform capture rate Up to 60,000 frames hardware real-time waveform recording and playback functions Innovative 'UltraVision' technology Various trigger and bus decoding functions Low noise floor, vertical scale range: 1 mV/div to 10 V/div Various interfaces: USB Host&Device, LAN (LXI), AUX Compact size, light weight, easy to use 7 inch WVGA (800x480) TFT LCD, intensity graded color display Included 1x Rigol DS1054Z Oscilloscope 1x Power cord 1x USB cable 4x PVP2150 Passive oscilloscope probe (150 MHz)

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The OWON ADS900A series is a compact 12-bit digital oscilloscope offering up to 2 GSa/s, 100 Mpts memory, and 125/250 MHz bandwidth. With its 7" multi-touch display, FFT, protocol decoding, and integrated logic analyzer, it delivers precise signal analysis for lab, workshop, and field applications. Specifications ADS914A ADS924A Bandwidth (-3 dB) 125 MHz 250 MHz Channels 4 Max. sample rate 2 GSa/s (single-channel) 1 GSa/s (dual-channel) 500 MSa/s (full-channel) DC Gain Accuracy 3% (≤1 mV) 2% (≥2 mV) Max memory depth 100M Vertical resolution 12 bits Relay time accuracy ±25 ppm (typical) Input Impedance 1 MΩ±2%, parallel with20 pF±5 pF Probe Attenuation Coefficient 1.00μX-1M.00X,step by 1-2-5, support custom Trigger type Edge, Video, Pulse, Slope, Runt, Windows, Timeout, Nth, Logic, RS232/UART, I²C, SPI CAN, LIN Bus decoding RS232/UART, I²C, SPI, CAN, LIN Auto measurement Period, Frequency, +Width, -Width, Rise Time, Fall Time, Scr Duty, +Duty,-Duty, Vavg, Vpp, VRMS, Overshoot, Vmax, Vmin, Vtop, CycRms, Vbase, Vamp, Preshoot, Std Dev, +Pulse Cnt, -Pulse Cnt, Rise Cnt, Fall Cnt, Area, Cyc Area, Delay(A↑-B↑), Delay(A↑-B↓), Delay(A↓-B↑), Delay(A↓-B↓), Phase(A↑-B↑) Phase(A↑-B↓), Phase(A↓-B↑), Phase(A↓-B↓), FRR(A↑-B↑), FRF(A↑-B↓) FFR(A↓-B↑), FFF(A↓-B↓), LRR(A↑-B↑), LRF(A↑-B↓), LFR(A↓-B↑), LFF(A↓-B↓) Waveform Math +, -, *, /, &&, ||, ^, ！, Intg, Diff, Sqrt, Function operation (Lg / Ln / Exp / Abs / Sine / Cosine / Tan), FFT, FFT rms, User Defined, digital filter (low pass, high pass, band pass, band reject) Frequency counter 6-digit frequency counter Maximum frequency: maximum analog bandwidth of oscilloscope Voltmeter Support DC, AC+DCrms, ACrms, Resolution: 4 digits (ACV/DCV) Logical Analyzer Specifications Number of channels 16 input channels (D0-D15) (D0 to D7, D8 to D15) Max. input voltage ±40V peak CAT I, transient overvoltage 800Vpk Input Impedance 100kΩ, 8 pF Vertical resolution 1 bit Other Communication Interface HDMI, USB device, USB Host, Trig Out (P/F), LAN Display 7 inch (1024x600), capacitive multi-touch screen Power supply interface USB-C Dimensions 260 x 160 x 78 mm Weight 1.5 kg Included 1x OWON ADS924A Oscilloscope 1x Power Adapter 1x Power Cord 1x USB Cable 1x Probe 1x Quick Guide Downloads Manual Quick Guide PC Software

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The OWON ADS900A series is a compact 12-bit digital oscilloscope offering up to 2 GSa/s, 100 Mpts memory, and 125/250 MHz bandwidth. With its 7" multi-touch display, FFT, protocol decoding, and integrated logic analyzer, it delivers precise signal analysis for lab, workshop, and field applications. Specifications ADS914A ADS924A Bandwidth (-3 dB) 125 MHz 250 MHz Channels 4 Max. sample rate 2 GSa/s (single-channel) 1 GSa/s (dual-channel) 500 MSa/s (full-channel) DC Gain Accuracy 3% (≤1 mV) 2% (≥2 mV) Max memory depth 100M Vertical resolution 12 bits Relay time accuracy ±25 ppm (typical) Input Impedance 1 MΩ±2%, parallel with20 pF±5 pF Probe Attenuation Coefficient 1.00μX-1M.00X,step by 1-2-5, support custom Trigger type Edge, Video, Pulse, Slope, Runt, Windows, Timeout, Nth, Logic, RS232/UART, I²C, SPI CAN, LIN Bus decoding RS232/UART, I²C, SPI, CAN, LIN Auto measurement Period, Frequency, +Width, -Width, Rise Time, Fall Time, Scr Duty, +Duty,-Duty, Vavg, Vpp, VRMS, Overshoot, Vmax, Vmin, Vtop, CycRms, Vbase, Vamp, Preshoot, Std Dev, +Pulse Cnt, -Pulse Cnt, Rise Cnt, Fall Cnt, Area, Cyc Area, Delay(A↑-B↑), Delay(A↑-B↓), Delay(A↓-B↑), Delay(A↓-B↓), Phase(A↑-B↑) Phase(A↑-B↓), Phase(A↓-B↑), Phase(A↓-B↓), FRR(A↑-B↑), FRF(A↑-B↓) FFR(A↓-B↑), FFF(A↓-B↓), LRR(A↑-B↑), LRF(A↑-B↓), LFR(A↓-B↑), LFF(A↓-B↓) Waveform Math +, -, *, /, &&, ||, ^, ！, Intg, Diff, Sqrt, Function operation (Lg / Ln / Exp / Abs / Sine / Cosine / Tan), FFT, FFT rms, User Defined, digital filter (low pass, high pass, band pass, band reject) Frequency counter 6-digit frequency counter Maximum frequency: maximum analog bandwidth of oscilloscope Voltmeter Support DC, AC+DCrms, ACrms, Resolution: 4 digits (ACV/DCV) Logical Analyzer Specifications Number of channels 16 input channels (D0-D15) (D0 to D7, D8 to D15) Max. input voltage ±40V peak CAT I, transient overvoltage 800Vpk Input Impedance 100kΩ, 8 pF Vertical resolution 1 bit Other Communication Interface HDMI, USB device, USB Host, Trig Out (P/F), LAN Display 7 inch (1024x600), capacitive multi-touch screen Power supply interface USB-C Dimensions 260 x 160 x 78 mm Weight 1.5 kg Included 1x OWON ADS914A Oscilloscope 1x Power Adapter 1x Power Cord 1x USB Cable 1x Probe 1x Quick Guide Downloads Manual Quick Guide PC Software

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