diff --git a/ModbusThermometer.cpp b/ModbusThermometer.cpp
index 7c31c64..c19d5d5 100644
--- a/ModbusThermometer.cpp
+++ b/ModbusThermometer.cpp
@@ -43,6 +43,7 @@ struct {
 
 
 void setup() {  
+  delay(100);
   led.begin(LED_PIN);
   ads1210_1.begin(ADC_1_CS_PIN, ADC_1_RDY_PIN);
   ads1210_2.begin(ADC_2_CS_PIN, ADC_2_RDY_PIN);
diff --git a/ads1210.cpp b/ads1210.cpp
index ffbd643..50eed0c 100644
--- a/ads1210.cpp
+++ b/ads1210.cpp
@@ -34,7 +34,7 @@ void ADS1210::waitForDRdy() const {
 
 
 void ADS1210::writeRegister(const uint8_t regAddr, const uint8_t value) const {
-	//waitForDRdy();
+	waitForDRdy();
 	enableCS();
 	SPI.transfer(regAddr);
 	SPI.transfer(value);
@@ -45,7 +45,7 @@ void ADS1210::writeRegister(const uint8_t regAddr, const uint8_t value) const {
 uint8_t ADS1210::readRegister(const uint8_t regAddr) const {
 	uint8_t res;
 
-	//waitForDRdy();
+	waitForDRdy();
 	enableCS();
 	SPI.transfer(regAddr | INSR_RW);
 	res = SPI.transfer(0);
@@ -61,6 +61,8 @@ void ADS1210::exec() {
 			uint32_t out;
 		} res;
 
+		writeRegister(ADDR_CMR3, CMR_SDL | CMR_UB | CMR_REFO);
+
 		enableCS();
 		SPI.transfer(ADDR_DOR2 | INSR_MB1 | INSR_RW);
 		res.in[2] = SPI.transfer(0);
@@ -107,13 +109,14 @@ void ADS1210::begin(uint8_t csPin, uint8_t drdyPin) {
 	digitalWrite(m_csPin, HIGH);
 	SPI.begin();
 	SPI.setBitOrder(MSBFIRST);
-	SPI.setClockDivider(SPI_CLOCK_DIV8);
+	SPI.setClockDivider(SPI_CLOCK_DIV128);
 	SPI.setDataMode(SPI_MODE1);
 	// Serial << "done." << endl;
 
 	// initialization of ADS1210
 	// Serial << "Start ADS1210 initialization ... ";
 	pinMode(m_drdyPin, INPUT);
+	delay(10);
 	writeRegister(ADDR_CMR3, CMR_SDL | CMR_UB | CMR_REFO);
 	writeRegister(ADDR_CMR1, 0x1b); // data rate
 	writeRegister(ADDR_CMR0, 0x58);