The LilyGo boards are a very cheap entry device with the strong radio chip in the t3s3 and easy battery power + gps in the tbeam.

current setup

M5Stack CardKB V1.1 UnitM5Stack CardKB V1.1 Unit0045181€11.00€11.00
LilyGO T-Beam V1.2 AXP2101 - LoRa 868MHz - NEO-M8N GNSS - ESP32LilyGO T-Beam V1.2 AXP2101 - LoRa 868MHz - NEO-M8N GNSS - ESP320057051€40.50€40.50
LilyGO T3-S3 LoRa 868MHz - ESP32-S3 - SX1262 - 0.96 inch OLED DisplayLilyGO T3-S3 LoRa 868MHz - ESP32-S3 - SX1262 - 0.96 inch OLED Display
1x 18650 Battery holder for PCB0006891€1,24€1,50€1,24
ATGM336H GPS Module0021761€9,09€11,00€9,09
Solar Panel with DC-DC converter and USB - 5V 1A0016911€9,92€12,00€9,92
LilyGO 0.96 inch OLED Display - 128*64 pixels - White - I2C0049701€5,37€6,50€5,37
Sanyo 18650 Li-ion Battery - 3350mAh - 10A - NCR18650GA
  - Warning: Yes, I am aware of the potential hazards of Li-ion batteries
0032842€5,79€7,00€11,57
Grove Female to JST-SH Female Compatible Cable - 4p - 20cm0058591€0,83€1,00€0,83

enclosures

resources

hardware options