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。Description。The SparkFun MicroMod Update Tool is built to interface with the MicroMod Asset Tracker Carrier Board and also makes it simple to communicate directly with the u-blox SARA-R510M8S module using u-blox's sophisticated m-center cellular evaluation software. If you're familiar with u-center， u-blox's GNSS evaluation software， you'll know how excellent their software is. m-center is every bit as good. Attach a USB-C cable and away you go!。The Update Tool is not a full MicroMod Processor Board， it is much simpler than that. It has a CH340C USB-Serial converter on it which gives you full access to all eight pins of the SARA-R5's UART interface via the Asset Tracker's USB-C connector. Think of it as a bridge from USB to serial.。The Update Tool features eight pairs of Plated Through Hole connections for the UART signals. You can use these to connect directly to the SARA UART using 3.3V signals if you want to. The split pads on the rear of the Tool can be opened to isolate the CH340C completely； the pins nearest the M.2 will link straight to the SARA UART.。Get Started with the MicroMod Update Tool Hookup Guide。Features。CH340C USB-Serial converter。Eight pairs of Plated Through Hole connections with split pad jumper links for：Serial Transmit(TX)。Serial Receive(RX)。Request To Send(RTS)。Clear To Send(CTS)。Data Terminal Ready(DTR)。Data Set Ready(DSR)。Ring Indicator(RI)。Data Carrier Detect(DCD)。LED indicator for：Power(3.3V)

。Description。Sometimes we want our projects on， but sometimes we want to turn them off for a while to save power. The SparkFun Nano Power Timer will run while only consuming minimal power(approximately 35nA)and turn your project on after a set amount of time. When you are done polling your sensors， posting data to the web， writing to your logger， or planning world domination， your microcontroller can tell the Nano Power Timer to turn off the power. No more running your microcontroller all day when you only want to read the ambient temperature once per hour.。The TPL5110 delay is configured with the use of resistors. We've added a six-way DIP switch to select one of the five preinstalled resistors. The sixth switch is attached to a pad to add your own PTH(or SMD)resistor. The delays associated with the preinstalled headers are shown on the bottom of the board for quick setup. Additionally， you can select more than one switch to combine the resistors in parallel(up to 26 options not including the custom resistor)， check out the hookup guide for a nice chart as to the total resistance and corresponding delay for each combination.。The Nano Power Timer can handle voltages between 1.8V and 5.5V as well as current up to 1.1A with times from 100ms to two hours(preconfigured settings range from 30s to 2h). You will find a button on the board which will allow you a quick override to the delay so you can turn your project on whenever you like.。Get Started with the SparkFun Nano Power Switch。Features。Supply Voltage：1.8V to 5.5V。Current consumption at 2.5V：35nA Typical(50nA Max)。Selectable Time intervals：100ms to 7200s(2 hours)。Timer Accuracy：1%

Description。This is the Antenna Kit for the Raspberry Pi 4 Compute Module wireless variants. The "duck" style antenna adds range to the wireless radio on the wireless enabled Compute Modules. Something quite desirable if you're working in industrial environments or other places a Compute Module would be used and the potential for signal interference is present. The antenna connects to the board via the press-fit U.FL connector on board the compute module(see photos for more details).。This kit contains an antenna， bulkhead fixture， and SMA to U.FL Cable.。Features。Frequency range：2400-2500/5100-5800 MHz。Bandwidth：100-700MHz。VSWR：≦ 2.0。Gain：2 dBi。Impedance：50 ohm。Polarisation：Vertical。Radiation：Omnidirectional。Maximum power：10W。Antenna dimensions：108 mm×10 mm