Temperature Logger
Description
Standalone 4-channel temperature logger, writes directly to SD card. Powered by 9V battery, runs on an Arduino Nano, potentiometer allows selection of sample frequency. FULL BOM: ------------------------------------------------------------------------ - 2x 5mm LED - 4x 100k Ohm Resistor - 2x 220 Ohm Resistor - Assorted wires (I used Dupont style connector type) - Everything above this line may be sourced individually, or bought in a single kit: https://www.amazon.com/ELEGOO-Electronics-Component-Starter-Kit/dp/B01ERP6WL4/ref=sr_1_3?keywords=resistor+and+LED+kit&qid=1552784987&s=gateway&sr=8-3 - 1x Arduino Nano or clone (use one *without* headers pre-installed): https://www.amazon.com/ELEGOO-Arduino-ATmega328P-Without-Compatible/dp/B0713XK923/ref=sr_1_5?keywords=arduino+nano&qid=1552785260&s=gateway&sr=8-5 - 1x RV097NS potentiometer with switch: https://www.amazon.com/RV097NS-Single-Potentiometer-Amplifier-sealing/dp/B07M9CL5TW/ref=sr_1_7?keywords=RV097NS&qid=1552785495&s=gateway&sr=8-7 - 4x NTX thermistor 100k Ohm: https://www.amazon.com/gp/product/B078YDMQPV/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1 - 1x SD card reader (or equivalent board for microSD card reader): https://www.ebay.com/itm/2PCS-Read-And-Write-For-Arduino-ARM-MCU-SD-Card-Module-Slot-Socket-Reader-N150/401299905512?epid=15012529032&hash=item5d6f569be8:g:Sg0AAOSwsB9WD80t - 1x 9V battery clip: https://www.amazon.com/Uxcell-a13110100ux0258-Battery-Connector-Black/dp/B00HG8BJWM/ref=sr_1_3?keywords=9v+battery+clip&qid=1552785807&s=industrial&sr=1-3 - Heatshink tubing, various sizes (optional): https://www.amazon.com/Ginsco-580-pcs-Assorted-Sleeving/dp/B01MFA3OFA/ref=sr_1_3?keywords=heat+shrink+tubing&qid=1552785918&s=industrial&sr=1-3
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