The table below is a summary of the altimeters characteristics and capabilities

Altimeter model	Alti Uno	Alti Duo	Mini Alti duo
Picture
Size in mm	75x20mm	89x32mm	77x23mm
Weight	11.4grams to 13 grams	21grams to 27grams	16grams to 18.5grams
Number of pyro output	1	2	2
Micro controller	ATtiny 85	ATMega328	ATtiny 84
USB interface connector	no	yes	no
power supply	6.5V to 12V	6.5V to 12V	6.5V to 12V
Max Output Current	17A or 49A	17A or 49A	17A or 49A
Pressure sensor	BMP085	BMP085	BMP085
Memory	no	no	no
Pressure range	300-1100hPa	300-1100hPa	300-1100hPa
Altitude range	-500 to 9000m	-500 to 9000m	-500 to 9000m
Kit	yes	yes	yes
Status	replaced by Alti Uno 180	replaced by Datalogger	replaced by Mini Alti duo 180
Current software version	1.3 (stable)	1.3 (stable) 1.4 (under development)	1.3 (stable)
Front end version	none	BearConsole with the 1.5 firmware	none
Software update	AVR programmer only	AVR programmer or USB interface or Blue tooth	AVR programmer only

Note that the weight depend on the transistor used. The max output current depend also on the transistor used

*Note that rated current for the pyro outputs is the max current of the transistor used

For the servos output the max current is the max current of the regulator used.

New kits

Those are a replacement for the AltiUno and Mini AltiDuo kits. They are smaller and are using the BMP180 sensor .

Altimeter model	Alti Uno 180	Alti Uno 180V2	Mini Alti duo 180	Mini Alti duo 180V2	Mini Alti duo 180 V3 (with switch connector)
Picture
Size in mm	57x19mm		65x23mm
Weight	11.4grams to 13 grams	11.4grams to 13 grams	16grams to 18.5grams	16grams to 18.5grams	16grams to 18.5grams
Number of pyro output	1	1	2	2	2
Micro controller	ATtiny 85	ATtiny 85	ATtiny 84	ATtiny 84	ATtiny 84
USB interface connector	no	no	no	no	no
power supply	6.5V to 9V	6.5V to 9V	6.5V to 9V	6.5V to 9V	6.5V to 9V
Max Output Current	17A	17A	17A	17A	17A
Pressure sensor	BMP180	BMP180	BMP180	BMP180	BMP180
Memory	no	no	no	no	no
Pressure range	300-1100hPa	300-1100hPa	300-1100hPa	300-1100hPa
Altitude range	-500 to 9000m	-500 to 9000m	-500 to 9000m	-500 to 9000m
Kit	yes	yes	yes	yes
Status	discontinued	available	discontinued	available
Current software version	1.3 (stable)	1.3 (stable)	1.3 (stable)	1.3 (stable)
Front end version	none	none	none	none	none
Software update	AVR programmer only	AVR programmer only	AVR programmer only	AVR programmer only	AVR programmer only

SMT version. Those are not kits but professionally soldered in a reflow oven.

Altimeter model	AltiUno SMT	AltiUno micro SMT V2	AltiDuoSmt	AltiDuo micro SMT V2
Picture
Size in mm	44x16 mm	44x16 mm	56x18 mm	51x18mm
Weight	5.5 grams	5.5 grams	7.3 grams	7.3 grams
Number of pyro output	1		2	2
Micro controller	ATtiny 85	ATtiny 85	ATtiny84	ATtiny84
USB interface connector	no	no	no	no
power supply	4.5V to 7.4V	3.7V to 9V	4.5V to 7.4V	3.7V to 9V
Max Output Current	9A	9A	9A	9A
Pressure sensor	BMP180	BMP180	BMP180	BMP180
Memory	no	no	no	no
Pressure range	300-1100hPa	300-1100hPa	300-1100hPa	300-1100hPa
Altitude range	-500 to 9000m	-500 to 9000m	-500 to 9000m	-500 to 9000m
Kit	no	no	no	no
Status	Fully tested and on sell		replaced by AltiDuo SMT micro V2	Fully tested and on sell
Current software version	1.3 (stable)	1.3 (stable)	1.4 (stable)	1.4 (stable)
Front end version	none	none	none	none
Software update	Impossible unless you have microcontroler dev tools	Impossible unless you have microcontroler dev tools	Impossible unless you have microcontroler dev tools	Impossible unless you have microcontroler dev tools
Unit	metrics	metrics	metrics/imperial	metrics/imperial

The alti micro versions are an enhanced version of the SMT AltiDuo and AltiUno that can work with 1S batteries

Those are various datalogger that are compatible with the Android application

Altimeter model	AltiMulti	AltiMulti V2 SMT	AltiMulti STM32 SMT	AltiMultiESP32
Picture
Size in mm	99x33mm	80x30mm	79x49mm	80x30mm
Weight	25grams to 26 grams
Number of pyro output	3	3	4	3
Micro controller	ATMega328	ATMega328	STM32F104	ESP32
USB interface connector	yes	yes	yes	yes
power supply	6.5V to 9V	6.5V to 9V	6.5V to 9V	6.5V to 9V
Max Output Current	17A	9A	9A	9A
Pressure sensor	BMP085	BMP180	BMP180	BMP180
Memory	yes 512K EEPROM	yes 512K EEPROM	yes 512K EEPROM	yes 512K EEPROM
Pressure range	300-1100hPa	300-1100hPa	300-1100hPa	300-1100hPa
Altitude range	-500 to 9000m	-500 to 9000m	-500 to 9000m	-500 to 9000m
Kit	yes	no	no	no
Status	Fully tested and on sell	Fully tested and on sell	Fully tested	Fully tested
Current software version	1.26 (stable)	1.26 (stable)	1.26 (stable)	1.26 (stable)
Front end version	Bearconsole Android application	Bearconsole Android application	Bearconsole Android application	Bearconsole Android application
Software update	yes using using cable and Android device	yes using using cable and Android device	yes using using cable and Android device	yes using using cable and PC
Unit	metrics/imperial	metrics/imperial	metrics/imperial	metrics/imperial

Water rocket or any servo driven altimeters

Gimbal

Gimbal module	MPU6050 version	BNO055 version

Telemetry modules

Those are cheap Lora modules board to replace 3DR telemetry modules and do telemetry with altimeter that have a serial jst connector

Lora module	SMT version	kit version

Connectors

Rocket motor test Stand

	TestStand V1	TestStand V2